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   <div id="projectname">nRF51 General Code Examples
   
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<a href="#define-members">Defines</a> &#124;
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<div class="title">GPIOTE example</div>  </div>
<div class="ingroups"><a class="el" href="group__nrf__examples__nrf6310.html">nRF6310 example projects</a></div></div>
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<p>GPIOTE example.  
<a href="#details">More...</a></p>
<table class="memberdecls">
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Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__nrf__gpiote__example.html#gaf9861a9f0be7addcd0683019de261336">GPIO_OUTPUT_PIN_NUMBER</a>&#160;&#160;&#160;8</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__nrf__gpiote__example.html#ga0416c15a1056d379260f5c4860a66d8f">GPIOTE_CHANNEL_NUMBER</a>&#160;&#160;&#160;0</td></tr>
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Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__nrf__gpiote__example.html#gad22626704ea5d45f863163500e355cc3">gpiote_init</a> (void)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__nrf__gpiote__example.html#gaad16890c50156256e260b5205571ddc4">ppi_init</a> (void)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__nrf__gpiote__example.html#gadd186346e02f7413d2fa6e72fe5f9562">timer0_init</a> (void)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__nrf__gpiote__example.html#ga840291bc02cba5474a4cb46a9b9566fe">main</a> (void)</td></tr>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<p>GPIOTE example. </p>
<p>This example shows the usage of GPIOTE peripheral. We use TIMER0 to generate 'EVENT_COMPARE0' event every 200 milliseconds. This will also clear the TIMER0 internal clock. This event is passed through PPI peripheral to generate a task. This task is used by GPIOTE (task mode) to toggle the pin. This means that every time we have EVENT_COMPARE event, the GPIO pin toggles automatically, which can only be achieved using the GPIOTE peripheral. [TIMER0]-&gt;EVENT_COMPARE-&gt;[PPI]-&gt;GPIOTE_TASK_OUT-&gt;[GPIOTE]-&gt;toggle_pin</p>
<div class="fragment"><pre class="fragment">
*          ----------------                       --------------------------
*  -Start-|    Timer0      |                     |   EEP |    PPI    |  TEP |-------
*  ------&gt;|  CC[0] = 200ms |-----Timer0_Event---&gt;|       | Channel 0 |      |       |
* |        ----------------                       --------------------------        |
* |                                                                                 |
* |    -----------------------------------------------------------------------------
* |   |
* |   |                 -----------------                      ---------------
* |    ---------TASK--&gt;|     GPIO_TE     |--&gt;Toggled_Output--&gt;|  LED toggling |--
* |                     -----------------                     |  every 200ms  |  |
* |                                                            ---------------   |
*  ------------------------------------------------------------------------------
*
* </pre></div> <div class="image">
<img src="example_board_setup_a.png" alt="example_board_setup_a.png"/>
<div class="caption">
Use board setup A for this example.</div></div>
<hr/><h2>Define Documentation</h2>
<a class="anchor" id="gaf9861a9f0be7addcd0683019de261336"></a><!-- doxytag: member="main.c::GPIO_OUTPUT_PIN_NUMBER" ref="gaf9861a9f0be7addcd0683019de261336" args="" -->
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          <td class="memname">#define GPIO_OUTPUT_PIN_NUMBER&#160;&#160;&#160;8</td>
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<p>Pin number for PWM output </p>

<p>Definition at line <a class="el" href="nrf6310_2gpiote__example_2main_8c_source.html#l00053">53</a> of file <a class="el" href="nrf6310_2gpiote__example_2main_8c_source.html">main.c</a>.</p>

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<a class="anchor" id="ga0416c15a1056d379260f5c4860a66d8f"></a><!-- doxytag: member="main.c::GPIOTE_CHANNEL_NUMBER" ref="ga0416c15a1056d379260f5c4860a66d8f" args="" -->
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          <td class="memname">#define GPIOTE_CHANNEL_NUMBER&#160;&#160;&#160;0</td>
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<p>GPIOTE channel number </p>

<p>Definition at line <a class="el" href="nrf6310_2gpiote__example_2main_8c_source.html#l00054">54</a> of file <a class="el" href="nrf6310_2gpiote__example_2main_8c_source.html">main.c</a>.</p>

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<hr/><h2>Function Documentation</h2>
<a class="anchor" id="gad22626704ea5d45f863163500e355cc3"></a><!-- doxytag: member="main.c::gpiote_init" ref="gad22626704ea5d45f863163500e355cc3" args="(void)" -->
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          <td class="memname">static void gpiote_init </td>
          <td>(</td>
          <td class="paramtype">void&#160;</td>
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          <td><code> [static]</code></td>
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<p>Initializes GPIO Tasks and Events peripheral. </p>

<p>Definition at line <a class="el" href="nrf6310_2gpiote__example_2main_8c_source.html#l00059">59</a> of file <a class="el" href="nrf6310_2gpiote__example_2main_8c_source.html">main.c</a>.</p>

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          <td class="memname">static void ppi_init </td>
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          <td><code> [static]</code></td>
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<p>Initializes Programmable Peripheral Interconnect (PPI) peripheral. Need PPI to convert timer event into task </p>

<p>Definition at line <a class="el" href="nrf6310_2gpiote__example_2main_8c_source.html#l00080">80</a> of file <a class="el" href="nrf6310_2gpiote__example_2main_8c_source.html">main.c</a>.</p>

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<a class="anchor" id="gadd186346e02f7413d2fa6e72fe5f9562"></a><!-- doxytag: member="main.c::timer0_init" ref="gadd186346e02f7413d2fa6e72fe5f9562" args="(void)" -->
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          <td class="memname">static void timer0_init </td>
          <td>(</td>
          <td class="paramtype">void&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td><code> [static]</code></td>
        </tr>
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<div class="memdoc">
<p>Initializes Timer 0 peripheral. </p>

<p>Definition at line <a class="el" href="nrf6310_2gpiote__example_2main_8c_source.html#l00100">100</a> of file <a class="el" href="nrf6310_2gpiote__example_2main_8c_source.html">main.c</a>.</p>

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          <td class="memname">int main </td>
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<p>main function </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>0. int return type required by ANSI/ISO standard. </dd></dl>

<p>Definition at line <a class="el" href="nrf6310_2gpiote__example_2main_8c_source.html#l00134">134</a> of file <a class="el" href="nrf6310_2gpiote__example_2main_8c_source.html">main.c</a>.</p>

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